Ensure that HoloViews callback events are not auto-dispatched

panel/pane/holoviews.py

@@ -281,8 +281,11 @@ def _get_model(self, doc, root=None, parent=None, comm=None):
 
     def _get_pane(self, backend, state, **kwargs):
         pane_type = self._panes.get(backend, Pane)
-        if isinstance(pane_type, type) and issubclass(pane_type, Matplotlib):
-            kwargs['tight'] = True
+        if isinstance(pane_type, type):
+            if issubclass(pane_type, Matplotlib):
+                kwargs['tight'] = True
+            if issubclass(pane_type, Bokeh):
+                kwargs['autodispatch'] = False
         return pane_type(state, **kwargs)
 
     def _render(self, doc, comm, root):

panel/pane/plot.py

@@ -57,6 +57,10 @@ class Bokeh(PaneBase):
     >>> Bokeh(some_bokeh_figure)
     """
 
+    autodispatch = param.Boolean(default=True, doc="""
+        Whether to automatically dispatch events inside bokeh on_change
+        and on_event callbacks in the notebook.""")
+
     theme = param.ClassSelector(default=None, class_=(Theme, str), doc="""
         Bokeh theme to apply to the plot.""")
 
@@ -114,7 +118,7 @@ def _get_model(self, doc, root=None, parent=None, comm=None):
                 continue
             properties[p] = value
         model.update(**properties)
-        if comm:
+        if comm and self.autodispatch:
             self._wrap_bokeh_callbacks(root, model, doc, comm)
 
         ref = root.ref['id']